Sets the internal OEChem stereochemistry from the given CIP atom stereo descriptor.
The descriptor must be either OECIPAtomStereo::R or
OECIPAtomStereo::S.
This function returns true if the stereochemistry was successfully set,
and false otherwise: i.e. the descriptor was invalid or the specified atom
was not a CIP atom stereo center.

Sets the internal OEChem stereochemistry from the given CIP atom stereo descriptor.
The descriptor must be either OECIPBondStereo::E or
OECIPBondStereo::Z.
This function returns true if the stereochemistry was successfully set,
and false otherwise: i.e. the descriptor was invalid or the specified bond
was not a CIP bond stereo center.